Cavity Mold Manufacturing Co., Ltd., Guangzhou (Guangdong, Guangzhou 510250) Cai Zijin an introduction to the production of our die-casting mold production and number second only to die and plastic mold, mold all kinds of output accounted for about 8%. Has formed the ~ branches have a certain scale, technologically advanced industrial countries can be followed.
Cavity Mold Manufacturing Co., Ltd., Guangzhou
1 Introduction
China die-casting mold production yield and number second only to die and plastic mold, mold all kinds of output accounted for about 8%. Has formed the ~ branches have a certain scale, technologically advanced industrial countries to keep the level of team. After China's accession to WI'O open intensified, often in cooperation with foreign countries, given the price advantage and environmental requirements of various factors, has been transferred to a large number of die-casting parts produced in China.
In recent years, motorcycle, automobile and appliance industries developed rapidly, die-casting industry emerged in the ever-changing situation, the die-casting ~ round of the rise of new industrial and prosperous of the die-casting mold manufacturing industry. From China Die & Mold Industry Association Governance Committee declared the "national professional mold factory basic information" (2003) statistics, the casting mold (of which the majority of die-casting mold), the output value in 2003 than in 2002 increased by 53%; China Die & Mold Industry Association in 2002 there were 781 member enterprises, of which 191 enterprises (accounting for 25 ~ / 0) are engaged in die-casting mold. At present, Europe, the United States, Japan, Korea and Taiwan region, die casting and die-casting mold users have to find in China, the supply of providers, can be predicted, our die-casting mold manufacturing industry in the spring to come.
2 die-casting mold manufacturer in China several stages of industrial development
Dependent on manufacturing die-casting mold die-casting industry in the development of China's development.
No. l stage: the 20th century, the mid-60s to 80.
Production of small die-casting mold, mainly applied to the following 25ookN die-casting machine. Die-casting products focused on the instruments, small appliances, lock industry, and other industries. Special is the fans part of the die-casting mold, a Taiwan fan parts generally have 10 die-casting: front cover, the cover after cover, shell, gear box, fan sets, columns, panels, bearing blocks, as well as aluminum rotor irrigation.
As the fan output of large (more than 10 million units per year), it was such a die-casting mold in the number of a dominant role. During this period, poor molding process, technical level and its ability to lower heat-resistant steel is mainly used 3Cr2W8V, quenching and tempering heat treatment using the surface nitride treatment or quenching quench oil as a whole will not solve the deformation problem, mold dimension control accuracy, do not pay attention to surface quality, aluminum alloy die life to less than 50000 die times, mold cycle 4-5 months, the larger the die-casting mold can not be produced. During this period, neither mold imports, exports and no mold.
Stage 2: the 20th century, the mid-80 mid--90.
As the fan to replace the aluminum part material to plastic, and the rapid growth of China's motorcycle industry (has reached more than 1000 million units per year), production of motorcycle parts die-casting mold jumped as the main products, each of several large aluminum motorcycle Alloy Castings: Left crankcase and right crankcase, clutch cover, magneto cover, cylinder body, handle brake parts, etc. In addition to a small amount of imported die-casting mold, the vast majority of Hainanen production molds to small and medium mainly applied to 8000kN the following die-casting machine, die weight is generally not more than 5t.
During this period, the level of the system over the previous model has been greatly improved, and a small number of enterprises started to introduce the use of CNC machining equipment and the preliminary computer-aided design, the heat-resistant steel is 3Cr2W8V or 4Cr5M0SiV1 (H13 type), heat treatment commonly used by oil-quenching the overall quenching and aluminum alloy die-casting mold life: 3-8 million in medium-sized mold mold times, small die mold 5 to 100,000 times, production cycle in the 3 ~ 5 months. During this period, there is no die-casting mold export and some import.
Phase 3: mid-20th century, 90 ~ so far.
The rise of China's automobile industry, as well as the rapid development of technology, the world's mold, die casting mold manufacturers in China has leap-forward development. Motorcycle parts die-casting mold making increasingly mature, large-scale, complex auto parts mold continuous research and development, manufacturing out, mold was large-scale, complex, long-life development.
Particular the last two years, generally paying attention to the quality and appearance of a marked lack of progress, life dies. CADl / CAM technology, universal application of individual firms also used CAE streaming Road and thermal field hardened after the finishing process route commonly used, the use of three-coordinate measuring instrument detected the size of the clamping machine assembly, repair mode, vacuum gas quenching and other advanced equipment and technology, this period, the heat-resistant steel is basically use of domestic or imported H13 class steel, mold die-casting machine applied 35000kN below, large-scale mold can be weighing 20 ~ 30t.
At present, household appliances, motorcycles and other industries die-casting mold completely satisfied with the demand, the automotive industry for die-casting mold used in an increasing proportion of domestic production, magnesium alloy die started to develop. During this period, large-scale, sophisticated, complex import a lot of die-casting mold, die-casting mold, but also the end of the situation did not go abroad, some production of the molds are exported to industrially advanced countries.
Three basic conditions of the manufacturing industry in China die-casting mold
Large number of die-casting mold manufacturer in China can be divided into four classes: Class 1: die-casting mold manufacturer specialized factories. These manufacturers specialized production, the whole of society to undertake within the four seas automobiles, motorcycles, household appliances, elevators and other industries in large and medium-sized die-casting mold making, die-casting mold inside and needed to come mainly from the professional manufacturers. Some of the former state-owned enterprises or state-owned enterprises through the reorganization and restructuring, corporate, and the other part is developing rapidly in recent years, the private enterprises.
The former state-owned enterprises generally mold a long history and manufacturing experience, complete equipment, strong technical team, integrated technology leader, they mold level best reflects the China's current overall level of die-casting mold. However, some businesses affected by the long-term institutional impact, management tools are not flexible, productivity is not high, and sometimes longer delivery cycles. Large-scale enterprises: FAW Foundry Co., Ltd. Foundry Mold Factory, Guangzhou cavity mold Manufacturing Co., Ltd., Beijing mold factory, mold Co., Ltd., Wuxi Shuguang.
The large number of private professional mold factory, in particular in the coastal areas dotted around the country, the development of mushroom production large, has become the main force of production die-casting mold. They are a flexible mechanism to short delivery, low price and meet the market demand. In recent years, many companies equipment and technology level and management level of a lot of progress, but also by the local government and Die Association, support, purchase of CNC equipment, CAD / CAM software, and even CAE software, mold manufacturing quality increased rapidly, which part of the company grew and grew, the scale is not small, the output value is also great, showing strong vitality.
Ningbo City in 2003 full-year sales reached l0 million die-casting mold, they are in a good regional cooperation and supporting the environment, such as Ningbo Beilun district, mold has more than 500 large and small enterprises, set up a central die-casting mold engineering, industrial Design central heat central (plant), Beilun mold website, measuring the Central, NC Central, electric processing, polishing processing, mold and die machining parts Blank supply blossom everywhere, supply fast, very convenient. The larger are: Xun Hui Electrical Appliance Co., Ltd., Ningbo Beilun Hui Wang Mold Co., Ltd., Ningbo Xinda Mold Manufacturing Co., Ltd., Ningbo Xin Precision Die Casting Mold Research Co. Ltd., Beilun Liaoyuan Molded Co., Ltd., Ninghai County, Hai Yu Aluminum Limited.
Category 2: joint ventures, foreign-owned enterprises. These enterprises well-equipped, the starting point higher, advanced technology, recruit foreign experts to guide and introduce advanced management mode and advanced technology, attention to staff training, pay attention to corporate image, the overall high level of mold, mold and reliable quality. There are larger Kyoritsu Seiki (Dalian) Limited.
Category 3: Large enterprises mold factory (workshop). Cars, motorcycles and some of the main output of the larger corporate sector (such as the system locks, toys, power tools) in large enterprises, their mold factory (shop) to undertake the task of its own mold making use of these companies are willing to invest money and talent, products and services targeted for the enterprise, some degree of difficulty is too high or too short duration of the mold will continue to work to the professional mold factory.
Such enterprises tend to have higher levels of die-casting base, originally used to mold many imported from abroad, in the digestion and absorption of foreign advanced technology based on the mold, the mold used in the enterprise in the design, manufacturing, localization and close to the foreign level, this Class mold factory (workshop) very powerful. In recent years, there is a new trend: some began to focus on to its own mold maintenance, mold repair mainly outside the mold is made purchases. The larger are: Shanghai Kolbenschmidt Pierburg Auto Parts Co., Ltd., Shanghai cosmopolitan Auto Accessories Co., Ltd., Dongfeng Automobile Brake Technology
Category 4: Die-casting plant attached to the mold shop. Most of these mold shop repair mold from the main business and then develop into the mold, some mold processing business has also made commitments. Its biggest strengths lies in its ability to provide tooling to stop casting production services. Light die-casting, such as Chengdu, Hing Industrial Co., Ltd. Chongqing Yujiang high mold company, Henan Zhongyuan Machinery Factory, Nanhai, Guangdong, Wen Can Die Casting Limited.
Overall, China's current scale of die-casting mold manufacturers are not large, the largest number of production was only about 100-200, up to 3000-4000 yuan in fixed assets, labor productivity in 5 ~ 20 Yuan / year. Distribution areas, mostly concentrated in the coastal economically developed provinces and municipalities, and automobile, motorcycle industrial base, such as Beijing, Shanghai, Jiangsu Province (Suzhou, Changzhou), Guangdong Province (Guangzhou, Dongguan, Shenzhen, Foshan city), Zhejiang ( Ningbo Beilun District, Yinzhou District, Ninghai County, Xiangshan County), Sichuan, Chongqing, Liaoning and Shandong and other places.
China's current production, die-casting mold can basically do the necessary self-sufficient, but some new varieties of parts die-casting mold, particularly in large, thin-walled, precision molds, with high technological content, is difficult to mold in general would also like to introduce, as the technology purchased at the same time the introduction of large-scale die-casting machine. Magnesium alloy die-casting mold has just begun.
(1) the automotive industry.
Used in the automotive industry, large-scale die-casting mold (eg, clutch, gearbox, steering, gear boxes, etc.) within the four seas are fully capable to design and manufacturing. Such molds are mostly auto mold factory or big business of professional mold factory production. The same product more than the first mold with the technical cooperation or technology transfer from abroad and later added the mold is in the absorption, digestion on the basis of imports of mold development. Cosmopolitan Shanghai Auto Accessories Co., Ltd. from the United States 3000kN die-casting machine using a large die (together with the red side-mode), the plant also makes some of its own own major die-casting mold, especially magnesium alloy die, the plant also commissioned within the four seas manufacturers make application at 18000 ~ 25000kN die-casting machine for use auto clutch and oil F15 chassis molds. Dongfeng Motor Corporation Fukang cars used in the clutch and gearbox of large die -casting mold, but also inside and factory production.
FAW Foundry Co., Ltd. Foundry Mold Factory, this year's production of "intermediate casing - - gearbox," mold, is by far my own design and manufacture of the largest auto parts die-casting mold, the mold weight of 33.5t, casting weight of 29kg, In the 32000kN molding die-casting machine, manufacture extremely difficult. Mold Manufacturing Co., Ltd., Guangzhou cavity before and after the Xiali, Beverly, North Kyrgyzstan, Chang'an, Volkswagen, General Motors, Peugeot, Honda, Qingling automobile plant manufacturing large cars such as die-casting mold. Die Casting Industry Co., Ltd., Chengdu Xingguang as China FAW Group, Changan manufacturers with mold, mold technology development in Heilongjiang Province, central production of the automobile gearbox mold, die casting Co., Ltd. Beilun "box-cylinder diesel engine," Die are unique attractions. These manufacturers of products, a reflection of our current vehicles large and medium-sized die-casting mold development and manufact uring has reached a certain level and quantity.
(2) The motorcycle industry.
Motorcycle industry has been able to use die-casting mold for mass production. Ever since our country to become motorcycle-producing country has been required each year more and more die-casting mold, most molds are made, many enterprises to provide the performance and life of the mold from Japan on close to similar products, such mold manufacturing maturity , the cycle is very short, low prices, like the left and right crankcase, in the Beilun area of about 2 to 3 months to the system out of production motorcycle die within the four seas can be satisfied with the demand within the four seas.
Motorcycle mold die mainly from the industry branch and professional mold factory, a special area of Mold Factory, Ningbo, Zhejiang. Beilun district, such as a large number of mold factory, mold factory Beijing, Chengdu Xing Light Die Casting Industry Co., Ltd. Kyoritsu Seiki (Dalian) Co., Ltd., Guangzhou cavity Mold Manufacturing Co., Ltd. to provide a large number of these die each year. In addition, Ningbo Economic and Technological Development Zone Kat Auto Parts Industry Co., Ltd. and die plant in Zhanjiang capable carburetor carburetor higher levels of mold.
(3) motor, electrical trades.
Motor industry, electric fans, washing machines, TVs, electric irons, electric food warmer used in various sectors such as die-casting mold has been basically self-sufficient in its production can be satisfied with the level of demand for products.
(4) large molds, such as the escalator steps mold inside and can be designed and manufactured. At present, China's elevator industry, the use of imported and domestically produced mixed mold. Type of mold is often weighs 20t, manufacture of high precision, such as the tread pitch for i0.05ram, using the die-casting machine locking force greater than 25000kN, mold complex, and difficult to process, manufacturing risks. Mold Co., Ltd. Wuxi Shuguang the earliest steps of production molds, has provided more than vice delivered. Cavity Mold Manufacturing Co., Ltd., Guangzhou since 1999 has been producing elevator die every year for the industry to provide several sets, mold high-temperature-control technology for the control mold temperature, hydraulic core pulling, and sometimes a mold box to install the three kinds of specifications product cavity (1000ram, 800ram, 600ram), or even nine kinds of specification products, mold processing, high precision, interchangeability, g ood for the user to save tooling costs. Steps of the two production plants molds in China
International (Shanghai) die technology and equipment exhibition in the mold was named Class A awards (close to the international level).
(5) other industries.
Hot chamber die-casting machine used to mold, special in the system of locks, gas appliances, plumbing equipment, instruments, toys and so on large-scale use, mold though not large, but the number is large. Such molds are mostly self-produced for personal use or corporate collaboration with manufacturers in this region. Xi'an Dongfang Machinery Factory manufacturing high-precision small-scale zinc alloy die, Guangdong Wan Ho Machine Casting Co., Ltd. (Hong Kong move into enterprises) produced by simulation of automotive die-casting mold, Guangdong mold lock Xiaolan, gas with mold and Jiangsu and Zhejiang, Guangdong area The hot chamber machines are used in molds of characteristics and size.
Ningbo Northern Lunta Zhi-gate mold factory shade mode, Beilun Huasheng Mold Factory's "New Zealand sewing machine head" mold, manufacturing is difficult, good quality, display at the exhibition were well received.
5, the level of manufacturing technology in China die-casting mold
Into the 21st century, China die-casting mold design and manufacturing has greatly improved the technological level of today's advanced processing equipment abroad, mold, using the software, processing technology and testing equipment, many companies have introduced and applied, though there are not many, but has become a major enterprise in various mold processing equipment and tools. In production form, the traditional processing method workshops with foreign advanced countries, the processing can not co-exist.
China's production of die-casting mold, compared with foreign products, the price is low, usually about 1/2-1/5 similar foreign mold; cycle is short, such as the motorcycle crankcase casting mold, usually in 4 months abroad can be delivered for use and within the four seas, compared with 2 to 4 months; die gap between life expectancy and abroad, inside and varying levels of different manufacturers and medium-sized complex molds abroad, often in the 10 ~ 150,000 die times, inside and do a better job of firms in general have 8 ~ 120,000 die times, the individual poor still at 2 ~ 30000 Die times; made mold main problem lies in the quality of the stability of poor quality and do not pay attention to appearance, size, high precision, when used high failure rate, rework and more restricted Casting increase in productivity.
???????
